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A219417 Unchanging value maps: number of n X n binary arrays indicating the locations of corresponding elements unequal to no horizontal or antidiagonal neighbor in a random 0..2 n X n array 0
1, 7, 93, 3617, 372560, 104434119, 80311501599, 170240798669115, 992546861505827096, 15854777538297903063593 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A219421

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3

..1..1..0....0..0..0....1..1..0....0..0..1....0..0..0....0..0..1....0..0..0

..0..0..0....0..1..0....0..0..0....1..1..1....1..0..1....0..0..1....1..0..1

..1..0..1....0..0..1....0..1..1....1..0..0....1..1..1....1..0..0....0..0..0

CROSSREFS

Sequence in context: A346464 A197484 A218835 * A220405 A109304 A134113

Adjacent sequences:  A219414 A219415 A219416 * A219418 A219419 A219420

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 19 2012

STATUS

approved

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Last modified January 26 18:26 EST 2022. Contains 350599 sequences. (Running on oeis4.)